CN102172814A - Method for manufacturing longitudinal submerged arc welded pipe - Google Patents
Method for manufacturing longitudinal submerged arc welded pipe Download PDFInfo
- Publication number
- CN102172814A CN102172814A CN 201110003728 CN201110003728A CN102172814A CN 102172814 A CN102172814 A CN 102172814A CN 201110003728 CN201110003728 CN 201110003728 CN 201110003728 A CN201110003728 A CN 201110003728A CN 102172814 A CN102172814 A CN 102172814A
- Authority
- CN
- China
- Prior art keywords
- lincoln weld
- submerged arc
- arc welding
- straight
- weld
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 68
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 238000003466 welding Methods 0.000 claims abstract description 66
- 238000005452 bending Methods 0.000 claims abstract description 17
- 238000005520 cutting process Methods 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 19
- 239000010959 steel Substances 0.000 claims description 19
- 238000000465 moulding Methods 0.000 claims description 12
- 238000007689 inspection Methods 0.000 claims description 7
- 238000004513 sizing Methods 0.000 claims description 7
- 150000001875 compounds Chemical class 0.000 claims description 6
- 210000001503 joint Anatomy 0.000 claims description 6
- 238000007493 shaping process Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 11
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 10
- 239000007789 gas Substances 0.000 abstract description 8
- 239000003345 natural gas Substances 0.000 abstract description 5
- 239000003921 oil Substances 0.000 abstract description 3
- 239000010779 crude oil Substances 0.000 abstract description 2
- 238000003754 machining Methods 0.000 abstract 1
- 239000011148 porous material Substances 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 3
- 230000002950 deficient Effects 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 238000013000 roll bending Methods 0.000 description 3
- 239000011324 bead Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- NBGBEUITCPENLJ-UHFFFAOYSA-N Bunazosin hydrochloride Chemical compound Cl.C1CN(C(=O)CCC)CCCN1C1=NC(N)=C(C=C(OC)C(OC)=C2)C2=N1 NBGBEUITCPENLJ-UHFFFAOYSA-N 0.000 description 1
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 229910001374 Invar Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Landscapes
- Arc Welding In General (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention discloses a method for manufacturing a longitudinal submerged arc welded pipe. The manufactured welded pipe is mainly used for a city natural gas pipeline, a subsea oil and gas pipeline, a product oil pipeline, a crude oil pipeline, a main natural gas pipeline, a branch trunk lines and the like. The method comprises the steps of rolled plate uncoiling, butting, plate edge machining, forming, online continuous prewelding, pipe cutting, submerged automatic arc welding, precise welding, and finishing; and the key technology is as follows: a high frequency welding (HFW) method is adopted during the forming step, and the forming method of a high-frequency resistance welding pipe is a continuous bending method, an arc bending method or combined forming method. The longitudinal submerged arc welded pipe produced by adopting the method has excellent quality, low production cost and is especially suitable for production of longitudinal submerged arc welded pipes of welding pipes with medium and small calibers.
Description
Technical field
The present invention relates to a kind of straight-line joint submerged arc welding tube manufacture method, the production of small-bore straight-line joint submerged arc welding tube in being specially adapted to, the steel pipe of being produced are mainly used in city natural gas pipe network, submarine oil natural gas line, product pipeline, crude oil pipeline, natural gas line main line and service main etc.
Background technology
Vertical masonry joint submerged-arc welding is normally carried out the method for crooked aftershaping with single steel plate by certain radius of curvature, because straight-line joint submerged arc welding tube adopts single steel plate as raw material usually, steel plate is than steel band price height, and therefore the straight-line joint submerged arc welding tube cost of producing is also than higher.Small-bore straight-line joint submerged arc welding tube during at present the manufacture method of straight-line joint submerged arc welding tube should not be produced, during its welding, generally be earlier in weldering, outside weld again, the poor quality guarantees, the straight-line joint submerged arc welding tube pore of production and be mingled with morely, cost is very high.Existing HFW(high-frequency resistance welding (HFRW)) not control automatically of the welding temperature of pipe and upset force needs the people for judging and controlling during production, cause HFW pipe quality instability, problems such as lumber recovery is low, cost height.
Summary of the invention
It is low, superior in quality that the technical problem to be solved in the present invention provides a kind of production cost, the straight-line joint submerged arc welding tube manufacture method of small-bore welded tube in being suitable for.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of straight-line joint submerged arc welding tube manufacture method, its key step comprises steel band uncoiling, butt joint, edges of boards processing, moulding, on-line continuous prewelding, Pipe Cutting, astute and able, the finishing of Lincoln weld, its key technology is: described forming step adopts the forming method of alternating-current resistance welded tube, and the forming method of alternating-current resistance welded tube is continuous bend method, circular arc bending method or combination forming method.
Further improve, also can between above-mentioned butt joint and edges of boards procedure of processing, increase pre-bending process, between above-mentioned moulding and on-line continuous prewelding step, increase the back bending process, can improve the quality of straight-line joint submerged arc welding tube like this.
Preferably, the shaping speed of the forming method of above-mentioned alternating-current resistance welded tube is smaller or equal to 8 meters/minute.
Above-mentioned on-line continuous prewelding step is continuous mixed gas arc welding, interior Lincoln weld, outer Lincoln weld or high-frequency resistance welding (HFRW).
The astute and able step of above-mentioned Lincoln weld is specially: when the on-line continuous prewelding adopted continuous mixed gas arc welding, Lincoln weld is astute and able to be outer Lincoln weld earlier, interior again Lincoln weld, perhaps earlier interior Lincoln weld, outer again Lincoln weld; When the prewelding mode was interior Lincoln weld, the astute and able method of Lincoln weld was outer Lincoln weld; When prewelding was outer Lincoln weld, the astute and able method of Lincoln weld was interior Lincoln weld; When the prewelding mode was HFW, the capable and vigorous method of Lincoln weld was outer Lincoln weld earlier, interior again Lincoln weld, or Lincoln weld earlier, outer again Lincoln weld.
The main technique flow process of above-mentioned finishing procedure comprises ultrasonic examination, radiographic inspection, repair welding, cool sizing aligning, the water pressure test, ultrasonic examination, the film making of pipe end weld seam, pipe end chamfered edge.
Above-mentioned cool sizing aligning adopts hydraulic pressure hole enlargement, machinery expanding or O trimmer, perhaps O trimmer and hydraulic pressure hole enlargement compound mode, the perhaps compound mode of O trimmer and machinery expanding.
Adopt the beneficial effect that technique scheme produced to be: forming step of the present invention adopts the molding mode of alternating-current resistance welded tube, joint close equipment and technology in the common straight-line joint submerged arc welding tube have been saved, the straight-line joint submerged arc welding tube that produces is superior in quality, and owing to adopt the steel band feed, with low cost, because of common straight-line joint submerged arc welding tube adopts dull and stereotyped feed, general steel band than dull and stereotyped cheap 1000 yuan/about; Compare with existing HFW pipe production method, more stable quality because of present HFW pipe welding temperature and upset force do not have achieve effective control, causes HFW pipe quality instability, and lumber recovery is low, the cost height.Therefore the inventive method has solved present straight-line joint submerged arc welding tube manufacture method small-bore in being unsuitable for producing (323.9～711mm) welded tubes, the welded tube pore, inclusion defect is many and the high problem of production cost.
The specific embodiment
The present invention is further detailed explanation below in conjunction with the specific embodiment.
1, roll bending is through uncoiling, leveling.
2, roll bending trims end to end, docks.
3, edges of boards pre-bending: can make steel band limit portion regular, be convenient to edges of boards processing, be the welded tube assistant formation simultaneously, can not carry out pre-bending when required precision is high.
4, edges of boards processing: mill the limit, dig the limit or cut the limit, or mill the limit and cut the limit combination, or dig the limit and mill the limit combination.Mill the limit formula, rough mill earlier, the edges of boards width is milled away 10～20mm, curved with the edges of boards defective, the crescent moon that guarantee to remove in the roll bending invar base and the operation of rolling, finish-milling X type groove then, the edges of boards that are about to two butt joints of roll of steel plate are left the groove of root face, certain angle respectively, and the butt joint back, two limits of steel plate forms double V groove, and is ready for welding.
5, moulding: adopt high-frequency resistance welding (HFRW) (HFW) molding mode, will roll into cylinder at HFW pipe former through the band steel of above-mentioned pre-crimp.After HFW steel pipe molding mode applied to straight-line joint submerged arc welding tube, HFW pipe shaping speed was reduced to 8 meters/minute (perhaps less than 8 meters/minute) by 30 meters/minute, greatly reduces the equipment requirement from the reeler to the make-up machine, has saved equipment investment and spare part expense.
6, palintrope: palintrope is after moulding, and after this prewelding andante limit palintrope that advances has increased bending process to guarantee edges of boards Forming Quality and quality of weld joint, when quality requirement is not high, and can be without this step.
7, prewelding: can adopt continuous mixed gas arc welding to carry out the on-line continuous prewelding as required, speed greatly reduces the requirement of HFW former smaller or equal to 8 meters/minute; Also can directly adopt interior Lincoln weld, or directly outer Lincoln weld, or the HFW weldering.Continuously the weldquality of mixed gas arc welding is better, is easy to realize prewelding and follow-up astute and able from motion tracking, and the prewelding velocity ratio is more satisfactory.
8, Pipe Cutting: the continuous steel pipe of pre-postwelding is cut into single steel pipe.
9, prewelding inspection and repairing.
10, inner wall of welded pipe cleaning dedusting.
11, draw the welding of blow-out plate, draw the blow-out plate in the welding of the welded tube two ends of pre-postwelding.
12, Lincoln weld is astute and able: when prewelding adopted continuous mixed gas arc welding, astute and able was outer Lincoln weld earlier, interior again Lincoln weld, perhaps earlier interior Lincoln weld, outer again Lincoln weld; During Lincoln weld, astute and able is outer Lincoln weld in prewelding adopts; When prewelding adopts outer Lincoln weld, the interior Lincoln weld of astute and able employing; When prewelding adopts the HFW weldering, astute and able employing outer Lincoln weld earlier, interior again Lincoln weld, perhaps Lincoln weld in the elder generation, outer again Lincoln weld.Should be noted in the discussion above that because the outside weld groove is easy to cleaning, and groove and solder flux are difficult for contaminated the welding pore, defective such as to be mingled with less, weldering was not strong in exhaust, deslagging demand had; And interior weldering is cleared up relative outside weld difficulty because groove and solder flux are easy to contaminatedly, the welding pore, is mingled with etc. morely, and exhaust, the relative outside weld of deslagging demand are strong.Adopt first outside weld mode, can strengthen standard during interior weldering, strengthen exhaust, deslagging ability, defective such as reduce pore in the weld seam, be mingled with can significantly improve qualification rate.Therefore in this step, preferably adopt outer Lincoln weld earlier, again in the method for Lincoln weld, and best results is made up in the continuous gas hybrid protection weldering during with prewelding.
13, the blow-out plate is drawn in excision.
14, welding slag and dust cleaning in the pipe.
15, ultrasonic examination: butt welded seam carries out ultrasonic examination and the ultrasonic wave hand is visited.
16, x-ray inspection: butt welded seam carries out x-ray inspection.
17, repair welding: poor weld is repaired.
18, cool sizing aligning: adopt O trimmer (also can adopt hydraulic pressure hole enlargement or machinery expanding, perhaps O trimmer and hydraulic press make up hole enlargement, and perhaps O trimmer and machinery expanding compound mode are carried out the cool sizing aligning of total length to welded tube).Because small-bore welded tube welding back bending is bigger, the machinery expanding machine conical surface is stressed bigger, and therefore, trimmer+hydraulic pressure hole enlargement compound mode is relatively good to the cool sizing leveling effect that straight-line joint submerged arc welding tube carries out total length to adopt O.
19, the water pressure test: carry out hydrostatic test by the root bead pipe, when adopting the hydraulic pressure hole enlargement, do not need to have repeated.
20, ultrasonic examination: carry out body, heat affected area and weld seam supersonic detection by root.
21, pipe end weld seam film making: carry out the pipe end film making by the root bead pipe and check.
22, pipe end welding seam grinding: be option, select whether the pipe end inner and outer welding is carried out reconditioning as required.
23, pipe end chamfered edge: groove and root face processing are carried out in the end of steel pipe.
24, finished product inspection: carry out welded tube outward appearance, physical dimension inspection by root.
25, weigh, survey length: carry out weighing of welded tube and survey length by root.
26, sign: identify by root.
27, warehouse-in, delivery etc.
The molding mode of existing HFW has continuous bend method, circular arc bending method and combination forming method, and the continuous bend method is that the total length of pipe is carried out whole bending, and crooked curvature divides passage from big to small; The bending molding process that row's roller unit adopts is exactly the circular arc bending method; The combination forming method is that continuous bend is carried out in the marginal portion of pipe, and the interlude and the linkage section of pipe carried out the circular arc bending.
It is raw material that the inventive method adopts steel band, continuously steel band is become cylinder along plate width direction flexural deformation through HFW pipe molding mode, and the on-line continuous prewelding cuts into single welded tube, and adopts the astute and able formation straight-line joint submerged arc welding tube of Lincoln weld.The capital equipment that the present invention manages HFW the welded tube unit combines with the main finishing equipment and the technology of straight-line joint submerged arc welding tube, wherein the welded tube unit is on HFW pipe former and technology basis, increase palintrope edge equipment and technology, saved storage equipment and technology, improved the edges of boards Forming Quality; The present invention has saved joint close equipment and the technology in the common straight-line joint submerged arc welding tube, and the straight-line joint submerged arc welding tube that produces is superior in quality; Adopted continuous mixed gas arc welding, directly carry out in prewelding technologies such as Lincoln weld or outer Lincoln weld, and, select corresponding Lincoln weld astute and able according to the difference of pre-soldering method.Successful solution common straight-line joint submerged arc welding tube manufacture method should not produce in small-bore straight-line joint submerged arc welding tube, small-bore straight-line joint submerged arc welding tube pore in promptly producing, inclusion defect are many, the problem that cost is high; Solved the not effectively control of HFW pipe welding temperature and upset force simultaneously, caused HFW pipe quality instability, problems such as the low and cost height of lumber recovery.
Claims (8)
1. straight-line joint submerged arc welding tube manufacture method, its key step comprises steel band uncoiling, butt joint, edges of boards processing, moulding, on-line continuous prewelding, Pipe Cutting, astute and able, the finishing of Lincoln weld, it is characterized in that: described forming step adopts the forming method of alternating-current resistance welded tube, and the forming method of alternating-current resistance welded tube is continuous bend method, circular arc bending method or combination forming method.
2. straight-line joint submerged arc welding tube manufacture method according to claim 1 is characterized in that: increase pre-bending process between described butt joint and edges of boards procedure of processing.
3. straight-line joint submerged arc welding tube manufacture method according to claim 2 is characterized in that: increase the back bending process between described moulding and on-line continuous prewelding step.
4. according to claim 1 or 3 described straight-line joint submerged arc welding tube manufacture methods, it is characterized in that: the shaping speed of the forming method of described alternating-current resistance welded tube is smaller or equal to 8 meters/minute.
5. straight-line joint submerged arc welding tube manufacture method according to claim 4 is characterized in that: described on-line continuous prewelding step adopts continuous mixed gas arc welding, interior Lincoln weld, outer Lincoln weld or high-frequency resistance welding (HFRW).
6. straight-line joint submerged arc welding tube manufacture method according to claim 5, it is characterized in that: the astute and able step of described Lincoln weld is specially: when the on-line continuous prewelding adopts continuous mixed gas arc welding, Lincoln weld is astute and able to be outer Lincoln weld earlier, interior again Lincoln weld, perhaps earlier interior Lincoln weld, outer again Lincoln weld; When the prewelding mode was interior Lincoln weld, the astute and able method of Lincoln weld was outer Lincoln weld; When prewelding was outer Lincoln weld, the astute and able method of Lincoln weld was interior Lincoln weld; When the prewelding mode was HFW, the capable and vigorous method of Lincoln weld was outer Lincoln weld earlier, interior again Lincoln weld, or Lincoln weld earlier, outer again Lincoln weld.
7. straight-line joint submerged arc welding tube manufacture method according to claim 1 is characterized in that: the main technique flow process of described finishing procedure comprises ultrasonic examination, radiographic inspection, repair welding, cool sizing aligning, the water pressure test, ultrasonic examination, the film making of pipe end weld seam, pipe end chamfered edge.
8. straight-line joint submerged arc welding tube manufacture method according to claim 7, it is characterized in that: described cool sizing aligning adopts hydraulic pressure hole enlargement, machinery expanding or O trimmer, perhaps O trimmer and hydraulic pressure hole enlargement compound mode, the perhaps compound mode of O trimmer and machinery expanding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110003728A CN102172814B (en) | 2011-01-10 | 2011-01-10 | Method for manufacturing longitudinal submerged arc welded pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110003728A CN102172814B (en) | 2011-01-10 | 2011-01-10 | Method for manufacturing longitudinal submerged arc welded pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102172814A true CN102172814A (en) | 2011-09-07 |
| CN102172814B CN102172814B (en) | 2012-10-10 |
Family
ID=44516158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110003728A Active CN102172814B (en) | 2011-01-10 | 2011-01-10 | Method for manufacturing longitudinal submerged arc welded pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102172814B (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102980518A (en) * | 2012-11-23 | 2013-03-20 | 中冶辽宁德龙钢管有限公司 | Intelligent length-measuring and weighing device and data management method |
| CN104439672A (en) * | 2014-11-14 | 2015-03-25 | 番禺珠江钢管（连云港）有限公司 | High frequency prewelding technology of longitudinal submerged arc welded pipe |
| CN104646449A (en) * | 2013-11-16 | 2015-05-27 | 无锡大金高精度冷拔钢管有限公司 | Manufacturing method for cold drawn welded pipe used for hydraulic oil cylinders |
| CN104889527A (en) * | 2015-06-12 | 2015-09-09 | 中石化石油工程机械有限公司沙市钢管厂 | Pipeline steel pipe welding technology |
| CN105382545A (en) * | 2015-12-11 | 2016-03-09 | 河北沧海核装备科技股份有限公司 | Production equipment and technique for plate-strip dual-use continuous production straight-slit submerged-arc welded pipes |
| CN105414907A (en) * | 2016-01-11 | 2016-03-23 | 南通振华重型装备制造有限公司 | Building technology for pile leg of self-elevating wind power vessel |
| CN105880952A (en) * | 2016-06-03 | 2016-08-24 | 合肥紫金钢管股份有限公司 | Production process of longitudinal submerged arc welded pipe for oil and gas transmission |
| CN106239168A (en) * | 2016-08-01 | 2016-12-21 | 葫芦岛市钢管工业有限公司 | A kind of pre-soldering method of the ERW for LSAW steel pipe's production |
| CN106514030A (en) * | 2016-10-17 | 2017-03-22 | 番禺珠江钢管（连云港）有限公司 | Application method for X groove in thick-wall pipe high frequency induction welding |
| CN106563862A (en) * | 2015-10-09 | 2017-04-19 | 江苏通宇钢管集团有限公司 | Welding technology of CC60 low temperature longitudinal welded pipe |
| CN107825069A (en) * | 2017-07-21 | 2018-03-23 | 南通振华重型装备制造有限公司 | A kind of interior center support system manufacture craft |
| CN114535939A (en) * | 2022-03-22 | 2022-05-27 | 湖南胜利湘钢钢管有限公司 | Method for manufacturing longitudinal submerged arc welded pipe |
| CN116141024A (en) * | 2023-04-21 | 2023-05-23 | 太原科技大学 | Medium longitudinal submerged arc welded pipe production equipment and technology |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103357697B (en) * | 2013-08-01 | 2015-07-01 | 山东胜利钢管有限公司 | Manufacturing technology of longitudinal submerged arc welded pipe |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101214511A (en) * | 2007-12-29 | 2008-07-09 | 番禺珠江钢管有限公司 | Large straight-line joint submerged arc welding tube fast production process |
| CN101474644A (en) * | 2009-01-14 | 2009-07-08 | 中冶辽宁德龙钢管有限公司 | High intensity straight-line joint pipeline steel tube fabrication technique using high-frequency electric resistance welding |
-
2011
- 2011-01-10 CN CN201110003728A patent/CN102172814B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101214511A (en) * | 2007-12-29 | 2008-07-09 | 番禺珠江钢管有限公司 | Large straight-line joint submerged arc welding tube fast production process |
| CN101474644A (en) * | 2009-01-14 | 2009-07-08 | 中冶辽宁德龙钢管有限公司 | High intensity straight-line joint pipeline steel tube fabrication technique using high-frequency electric resistance welding |
Non-Patent Citations (2)
| Title |
|---|
| 《焊管》 20070930 赵春友 中直径直缝双面埋弧焊钢管 第30卷, 第5期 * |
| 《石油矿场机械》 20071231 徐兴平 高频直缝电阻焊钢管成型过程仿真 第36卷, 第7期 * |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102980518A (en) * | 2012-11-23 | 2013-03-20 | 中冶辽宁德龙钢管有限公司 | Intelligent length-measuring and weighing device and data management method |
| CN104646449A (en) * | 2013-11-16 | 2015-05-27 | 无锡大金高精度冷拔钢管有限公司 | Manufacturing method for cold drawn welded pipe used for hydraulic oil cylinders |
| CN104439672A (en) * | 2014-11-14 | 2015-03-25 | 番禺珠江钢管（连云港）有限公司 | High frequency prewelding technology of longitudinal submerged arc welded pipe |
| CN104889527A (en) * | 2015-06-12 | 2015-09-09 | 中石化石油工程机械有限公司沙市钢管厂 | Pipeline steel pipe welding technology |
| CN106563862A (en) * | 2015-10-09 | 2017-04-19 | 江苏通宇钢管集团有限公司 | Welding technology of CC60 low temperature longitudinal welded pipe |
| CN105382545A (en) * | 2015-12-11 | 2016-03-09 | 河北沧海核装备科技股份有限公司 | Production equipment and technique for plate-strip dual-use continuous production straight-slit submerged-arc welded pipes |
| CN105414907A (en) * | 2016-01-11 | 2016-03-23 | 南通振华重型装备制造有限公司 | Building technology for pile leg of self-elevating wind power vessel |
| CN105880952A (en) * | 2016-06-03 | 2016-08-24 | 合肥紫金钢管股份有限公司 | Production process of longitudinal submerged arc welded pipe for oil and gas transmission |
| CN106239168A (en) * | 2016-08-01 | 2016-12-21 | 葫芦岛市钢管工业有限公司 | A kind of pre-soldering method of the ERW for LSAW steel pipe's production |
| CN106514030A (en) * | 2016-10-17 | 2017-03-22 | 番禺珠江钢管（连云港）有限公司 | Application method for X groove in thick-wall pipe high frequency induction welding |
| CN107825069A (en) * | 2017-07-21 | 2018-03-23 | 南通振华重型装备制造有限公司 | A kind of interior center support system manufacture craft |
| CN114535939A (en) * | 2022-03-22 | 2022-05-27 | 湖南胜利湘钢钢管有限公司 | Method for manufacturing longitudinal submerged arc welded pipe |
| CN114535939B (en) * | 2022-03-22 | 2023-02-28 | 湖南胜利湘钢钢管有限公司 | Method for manufacturing longitudinal submerged arc welded pipe |
| CN116141024A (en) * | 2023-04-21 | 2023-05-23 | 太原科技大学 | Medium longitudinal submerged arc welded pipe production equipment and technology |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102172814B (en) | 2012-10-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102172814B (en) | Method for manufacturing longitudinal submerged arc welded pipe | |
| CN101797600B (en) | Method for manufacturing high-strength X100 steel grade spiral seam submerged arc welded pipe | |
| CN100547103C (en) | A kind of method for manufacturing high-strength X 80 steel spiral welded pipe | |
| CN102330034B (en) | X65MS steel-grade spiral welded tube for acidic corrosion environment and manufacturing method thereof | |
| CN103722346B (en) | A kind of corrosion resistance metallurgical composite bimetal longitudinal submerged arc welded pipe and preparation method | |
| CN100376338C (en) | Method and apparatus for producing heterotype tubing using steel plate | |
| CN102205458B (en) | Manufacturing method for X120 steel-level spiral seam hidden arc welding tube | |
| CN101886222A (en) | Method for manufacturing high-strength X90 steel grade spiral submerged arc welded pipe | |
| CN104816076A (en) | Tube-to-tube butt welding technological method of coiled tube | |
| CN105081683A (en) | Machining technology of straight-seam steel reel pipe | |
| CN109483179B (en) | Processing technology of high-strength steel coil pipe | |
| CN103084427B (en) | Manufacturing method of hardenability steel tube | |
| CN103394546B (en) | Production method for longitudinal welded pipe | |
| CN106346118A (en) | Whole-position welding method of 16Cr stainless steel continuous pipe | |
| CN102330032B (en) | Acid-proof X70MS steel-grade spiral welded pipe and manufacturing method thereof | |
| CN104607773B (en) | Tubulation welding method of stainless steel outer composite tube | |
| CN104384678A (en) | Novel welding technology of SSAW (Spirally Submerged Arc Welding) pipe | |
| CN202162537U (en) | High-frequency straight welded pipe production line | |
| CN108500559A (en) | A kind of manufacturing method of super large caliber heavy wall X80 steel-grade spiral submerged welded pipe | |
| CN104439672A (en) | High frequency prewelding technology of longitudinal submerged arc welded pipe | |
| CN201969996U (en) | Longitudinal submerged-arc welding production line for stainless-steel pipe and carbon steel pipe | |
| CN102990287B (en) | Processing method of decorative stainless steel ball with thick wall | |
| CN107443016A (en) | A kind of ultra-thin interior combined helical pipe tubulation welding method | |
| CN109262205A (en) | Monocline roll system adapter tube manufacturing method | |
| CN113199247A (en) | One-time forming device and method for longitudinal submerged arc welded steel pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: LI YANFENG Free format text: FORMER OWNER: CUI JIANLI Effective date: 20140120 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Yanfeng Inventor before: Cui Jianli |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 063000 TANGSHAN, HEBEI PROVINCE TO: 411100 XIANGTAN, HUNAN PROVINCE Free format text: CORRECT: INVENTOR; FROM: CUI JIANLI TO: LI YANFENG |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140120 Address after: 411100 No. 1 Jianshe South Road, Hunan, Xiangtan Patentee after: Li Yanfeng Address before: 063000 Hebei province Tangshan City Lunan District Changtai riffo Park 501 5 floor, No. 501 Patentee before: Cui Jianli |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220124 Address after: 411100 No. 1 Jianshe South Road, Hunan, Xiangtan Patentee after: Li Yanfeng Patentee after: Hunan Shengli Xianggang Steel Pipe Co., Ltd Address before: 411100 No. 1 Jianshe South Road, Hunan, Xiangtan Patentee before: Li Yanfeng |